CN114872750B - Barrier removing diffuser for train - Google Patents

Abstract

The invention discloses a barrier removing diffuser for a train, which comprises a barrier removing structure which is arranged below the head part and/or the tail part of the train and is used for removing rail barriers, wherein the barrier removing structure is of a semi-closed surrounding structure, and a diffusion structure which is used for guiding the flow direction of gas and rectifying the gas is arranged in a region surrounded by the barrier removing structure. By arranging the barrier removing structure and the diffusion structure at the same time, the barrier removing diffuser has the functions of removing rail barriers and guiding and rectifying the air flow passing through the barrier removing structure and flowing through the diffusion structure. Compared with the prior art that the obstacle deflector has the obstacle removing function and simultaneously causes the phenomenon of blocking and dragging of the air flow at the bottom of the vehicle body, the technical scheme provided by the invention rectifies the air flow with the blocking and dragging through the diffusion structure and guides the air flow to orderly pass through the obstacle removing diffuser, so that the blocking and dragging phenomenon is eliminated or relieved, and the situation that the normal operation of a train is disturbed due to the arrangement of obstacle removing facilities is avoided.

Description

An obstacle-clearing diffuser for trains

Technical field

The present invention mainly relates to the technical field of obstacle removers, and in particular, to an obstacle remover diffuser for trains.

Background technique

The obstacle remover is used to remove obstacles that appear on the railway track during train operation, thereby eliminating damage to the train caused by the obstacles, ensuring the normal operation of the train, thereby protecting the lives and property of passengers and the safety of transported goods. In order to ensure the safe operation of the train, the height of the lower plane of the train obstacle remover from the rail surface has a specific range of values. When the outer dimensions of the obstacles on the railway track are lower than the lower plane of the obstacle remover, the lower bogie of the train The stone sweeper can remove the obstacles on the railway track to the outside of the track. When the outer dimensions of the obstacles on the railway track are higher than the lower plane of the obstacle remover, the obstacles will be removed from the track by the obstacle remover. This ensures the safe operation of the train. In order to ensure that obstacles can be effectively removed, the obstacle removers in the prior art are often set in the shape of a shovel. When the obstacle remover follows the train at high speed, it will cause serious obstruction and drag on the air at the bottom of the car body, thereby affecting the train operation. .

Contents of the invention

The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an obstacle-clearing diffuser for trains that is conducive to the passage of gas and thereby reduces the obstruction and drag of the air flow at the bottom of the car body.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

An obstacle removal diffuser for trains, including an obstacle removal structure installed under the head and/or tail of the train and used to clear track obstacles. The obstacle removal structure is a semi-enclosed structure. The area enclosed by the barrier structure is provided with a diffusion structure for guiding the flow direction of the gas and rectifying the gas.

As a further improvement of the above technical solution:

The obstacle removal structure is composed of a middle section connected with two side sections; the middle section is formed with an opening for gas to pass through; the side sections are located on both sides of the middle section and together form a semi-enclosed structure.

The width of the opening is consistent with the width of the middle section, and the side edges of the opening are inscribed to form a planar inner side of the side section; the outer side of the obstacle removal structure is streamlined.

The diffusion structure includes a number of symmetrical and parallel fins, which are arranged in the direction of air flow; the angle α formed by the side edge of the fin and the bottom surface of the fin ranges from 60° to 120°.

The diffusion structure also includes a diffusion surface for connecting the fins. The diffusion surface is inclined and located above the fins. One end edge of the diffusion surface coincides with the upper edge of the opening; the diffusion surface is composed of a plane segment and a One end of the curved surface segment is formed by splicing together; one end edge of the plane segment one coincides with the upper edge of the opening, and one end of the curved surface segment one and the plane segment one make a smooth transition.

The obstacle-removing diffuser also includes an external diffusion structure protruding outward from the diffusion structure for guiding and rectifying the gas flow; the width of the external diffusion structure is smaller than the width of the opening.

The external diffusion structure includes a deflector and a number of outer fins; the inner side of the deflector is connected to the lower end of the fins, and the outer side is cantilevered outward; the outer fins are symmetrically formed on the lower side of the deflector and are connected with the lower end of the deflector. The fins are parallel; the angle β formed by the side end edge of the outer fin and the bottom surface of the outer fin ranges from 60° to 120°.

The deflector is arranged at an angle, and its lower surface is composed of two flat sections and two curved sections; the second flat section is located on the outside, and the second curved section is located on the inside, and the second curved section and the two flat sections are The second curved surface segment and the bottom surface of the airfoil have a smooth transition; the inclination angle of the second flat segment is less than or equal to the inclination angle of the diffusion surface.

The barrier removal structure also includes a grid plate installed on the opening for clearing obstacles. The grid plate is formed with a plurality of grid meshes, and the gas passes through the barrier removal structure through the grid meshes.

The grid mesh is evenly distributed.

Compared with the prior art, the advantages of the present invention are:

By arranging the obstacle removal structure and the diffusion structure at the same time, the obstacle removal diffuser has the function of clearing track obstacles and guiding and rectifying the air flow passing through the obstacle removal structure and flowing through the diffusion structure. Compared with the obstacle remover in the prior art that has an obstacle removal function and at the same time causes obstruction and dragging of the airflow at the bottom of the vehicle body, the technical solution provided by this embodiment uses a diffusion structure to rectify and rectify the airflow that causes obstruction and dragging. Guide them to pass through the obstacle clearance diffuser in an orderly manner, thereby eliminating or alleviating obstruction and dragging phenomena, and thus avoiding interference with the normal operation of the train due to the installation of obstacle clearance facilities.

Description of the drawings

Figure 1 is a schematic structural diagram of the barrier diffuser in Embodiment 1 (View 1);

Figure 2 is a schematic structural diagram of the barrier diffuser in Embodiment 1 (view two);

Figure 3 is a schematic structural diagram of the barrier diffuser in Embodiment 2 (View 1);

Figure 4 is a schematic structural diagram of the barrier diffuser in Embodiment 2 (view two);

Figure 5 is a schematic structural diagram of the barrier diffuser in Embodiment 2 (perspective three);

Figure 6 is a schematic cross-sectional view of the barrier diffuser in Embodiment 2;

Figure 7 is a schematic structural diagram of the barrier diffuser in Embodiment 3 (View 1);

Figure 8 is a schematic structural diagram of the barrier diffuser in Embodiment 3 (view two);

Figure 9 is a schematic diagram of the application scenario of the barrier diffuser.

Each number in the figure represents: 1. Obstacle removal structure; 11. Middle section; 111. Opening; 12. Side section; 121. Planar inner side; 13. Grid plate; 2. Diffusion structure; 21. Wings; 22. Diffusion surface; 221. Plane section one; 222. Curved section one; 3. External diffusion structure; 31. Guide plate; 311. Plane section two; 312. Curved section two; 32. External wing; 4. Rail.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific examples.

Example 1

As shown in Figures 1, 2 and 9, the obstacle removal diffuser for trains in this embodiment includes an obstacle removal structure 1 installed under the head and/or tail of the train and used to clear track obstacles, The obstacle removal structure 1 is a semi-enclosed structure, and a diffusion structure 2 for guiding the gas flow and rectifying the gas is provided in the area enclosed by the obstacle removal structure 1 . During the operation of the train, in order to prevent obstacles from getting into the bottom of the car and causing equipment damage, the obstacle diffuser is installed under the end of the train body to discharge the obstacles to both sides of the train through collision and pushing. . By arranging the obstacle removal structure 1 and the diffusion structure 2 at the same time, the obstacle removal diffuser has the function of clearing track obstacles and guiding and rectifying the airflow passing through the obstacle removal structure 1 and flowing through the diffusion structure 2. Compared with the obstacle remover in the prior art that has an obstacle removal function and at the same time causes obstruction and dragging of the airflow at the bottom of the vehicle body, the technical solution provided in this embodiment rectifies the airflow that causes obstruction and dragging through the diffusion structure 2 And guide them to pass through the obstacle clearance diffuser in an orderly manner, thereby eliminating or alleviating obstruction and dragging phenomena, and thus avoiding interference with the normal operation of the train due to the installation of obstacle clearance facilities.

In this embodiment, the obstacle removal structure 1 is composed of a middle section 11 connected with two side sections 12; the middle section 11 is formed with an opening 111 for gas to pass through; the side sections 12 are located on both sides of the middle section 11, forming a semi-enclosed structure together. The two side sections 12 are located on both sides of the middle section 11, forming an obstacle removal structure 1 with the middle section 11 protruding. When the train is running, the gas collides head-on with the middle section 11, so the obstruction and drag phenomenon are most obvious there. By providing the opening 111 in the middle section 11 , the gas coming from the front can pass through, thereby effectively reducing the obstruction caused by the obstacle removal structure 1 . At the same time, in order to ensure that the obstacles on the rail 4 are effectively removed without entering the car bottom through the opening 111 and affecting driving safety, the side section 12 is placed directly above the rail 4. When the train encounters obstacles on the rail while driving, The outer surface of the side section 12 at the front end of the lead vehicle can collide with the obstacle and push the obstacle to the outside of the vehicle body.

In this embodiment, the width of the opening 111 is consistent with the width of the middle section 11 , and the planar inner side 121 of the side section 12 is formed by incision along the side edge of the opening 111 . The outer surface of the obstacle removal structure 1 is streamlined. By setting the width of the opening 111 to be consistent with the width of the middle section 11 , the gas passing through the opening along the edge of the opening will directly enter the area where the side section 12 is located. In order to reduce the collision and friction between this part of the gas and the inner side 121 of the side section 12 , the inner side is set to be flat, and the inner side 121 is parallel to the driving direction and perpendicular to the ground of the side section 12, so that the gas can be discharged backward along the inner side 121 and reduce the obstruction and drag of the airflow at the bottom of the car body. At the same time, because the inner side 121 is inscribed along the side edge of the opening 111, and the outer side of the side section 12 is a curved surface, the end of the side section 12 connected to the middle section 11 is in the shape of a sharp angle, and the side section 12 of this shape It can further reduce the friction with the gas to reduce resistance. Furthermore, the streamlined outer surface can significantly optimize the mechanical properties. When the obstacle removal structure 1 is located at the front end, its streamlined shape can effectively guide the separation of the airflow from the lower area of the vehicle body and prevent obvious flow separation, thereby preventing the occurrence of There is an obvious increase in aerodynamic resistance; and the streamlined outer surface just allows the side section 12 to be diagonally straddled on the rail 4, thereby facilitating the push of obstacles to the outside of the vehicle body.

In this embodiment, the diffusion structure 2 includes a number of symmetrical and parallel fins 21 , and the fins 21 are arranged along the airflow direction. The angle α formed by the side edge of the fin 21 and the bottom surface of the fin 21 ranges from 60° to 120°. In this embodiment, the diffusion structure 2 includes a number of symmetrically arranged fins 21 , and each fin 21 is parallel to each other. When the obstacle-removing diffuser is installed on the train and moves with it, the fins 21 remain consistent with the direction of the airflow. By providing the fins 21, the airflow can be cut and forced to flow along the gaps between the fins 21, thereby achieving rectification. Preferably, the top ends of the fins 21 are arranged in a streamlined manner along the outer side of the obstacle removal structure 1. When obstacles are located within the range of the opening 111, the fins 21 can be used to remove them.

In this embodiment, the diffusion structure 2 also includes a diffusion surface 22 for connecting the fins 21 . The diffusion surface 22 is inclined and located above the fins 21 . One end edge of the diffusion surface 22 coincides with the upper edge of the opening 111 . The diffusion surface 22 is composed of a flat section 221 and a curved section 222 spliced together; one end edge of the flat section 221 coincides with the upper edge of the opening 111 , and one end of the curved section 222 smoothly transitions to the flat section 221 . By providing the diffusion surface 22, the airflow direction can be guided, so that the airflow can smoothly pass through the diffusion structure 2, thereby increasing the flow rate. In order to avoid bending corners, a curved surface segment 222 is provided for smooth transition.

Example 2

As shown in Figures 3 to 6, the second embodiment of the obstacle removal diffuser of the present invention is used for trains. The obstacle removal diffuser is basically the same as Embodiment 1. The difference is that in this embodiment, the obstacle removal diffuser also It includes an outer diffusion structure 3 that protrudes outward from the diffusion structure 2 and is used to guide and rectify the gas flow. The width of the outer diffusion structure 3 is smaller than the width of the opening 111 . The technical solution disclosed in this embodiment optimizes the obstacle removal structure 1 so that it has the ability to allow gas to pass through, thereby significantly reducing the obstruction and drag of the air flow at the bottom of the vehicle body. Not only that, in the obstacle removal structure 1 The surrounding area is provided with a diffusion structure 2 for guiding the gas flow direction, and an external diffusion structure 3 connected to the diffusion structure 2 is protruding along the direction of the end of the vehicle body, which can optimize the air flow field, guide the air flow, and improve the air flow outflow efficiency. , alleviating the obstruction and drag effects caused by the existing obstacle remover structure.

In this embodiment, the outer diffusion structure 3 includes a deflector 31 and a plurality of outer fins 32; the inner side of the deflector 31 is connected to the lower end of the fins 21, and the outer side is cantilevered outwards and upward; the outer fins 32 are symmetrically formed on the deflector. 31 lower side and parallel to the flap 21. The angle β formed by the side end edge of the outer fin 32 and the bottom surface of the outer fin 32 ranges from 60° to 120°. By arranging the fins 21 and the outer fins 32, the airflow can be cut, and the airflow can be forced to flow along the gap between the fins 21 and the outer fins 32, thereby achieving rectification.

In this embodiment, the deflector 31 is arranged at an angle, and its lower surface is composed of a second flat section 311 and a second curved section 312; the second flat section 311 is located on the outside, and the second curved section 312 is located on the inside, and the second curved section 312 is in contact with the plane The second section 311, the second curved surface section 312 and the bottom surface of the wing 21 all have a smooth transition. The inclination angle of the second plane section 311 is less than or equal to the inclination angle of the diffusion surface 22 . By providing the guide plate 31 , the airflow direction can be guided so that the airflow can smoothly pass through the outer diffusion structure 3 , thereby increasing the flow rate. In order to avoid the angle between the plane section 311 and the diffusion structure 2, a curved surface section 312 is provided to make a smooth transition.

Example 3

As shown in Figures 7 and 8, the third embodiment of the obstacle removal diffuser of the present invention is used for trains. The obstacle removal diffuser is basically the same as Embodiment 1. The difference is that in this embodiment, the obstacle removal structure 1 also It includes a grille plate 13 installed in the opening 111 for clearing obstacles. The grille plate 13 is formed with a number of grille meshes, and the gas passes through the obstacle removal structure 1 through the grille meshes. The grille mesh is evenly distributed. By adding a grille plate 13 formed with a plurality of grille meshes at the opening 111, the obstacle removal function can be further enhanced, thereby preventing obstacles from entering the vehicle bottom through the opening 111 and affecting driving safety.

Although the present invention has been disclosed above in terms of preferred embodiments, this is not intended to limit the present invention. Any person familiar with the art can, without departing from the scope of the technical solution of the present invention, use the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into equivalent implementations with equivalent changes. example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims (7)

1. An obstacle-removing diffuser for trains, characterized in that: it includes an obstacle-removing structure (1) installed under the head and/or tail of the train and used for clearing track obstacles, and the obstacle-removing structure (1) 1) It is a semi-enclosed structure, and a diffusion structure (2) for guiding the flow of gas and rectifying the gas is provided in the area surrounded by the obstacle removal structure (1); the obstacle removal structure (1) consists of a middle section (11) is connected to both side sections (12); the middle section (11) is formed with an opening (111) for gas to pass through; the side sections (12) are located on both sides of the middle section (11), forming a semi-enclosed shape together. Structure; the diffusion structure (2) includes a number of symmetrical and parallel fins (21), the fins (21) are arranged in the direction of air flow; the side end edges of the fins (21) and the fins (21) The angle α formed by the bottom surface ranges from 60° to 120°; the diffusion structure (2) also includes a diffusion surface (22) for connecting the fins (21), the diffusion surface (22) is inclined, Located above the wing (21), one end edge of the diffusion surface (22) coincides with the upper edge of the opening (111); the diffusion surface (22) is composed of a flat section (221) and a curved section (222). ; One end edge of the plane segment one (221) coincides with the upper edge of the opening (111), and one end of the curved surface segment one (222) transitions smoothly to the plane segment one (221). 2. The obstacle clearance diffuser for trains according to claim 1, characterized in that: the width of the opening (111) is consistent with the width of the middle section (11), and the width along the side edge of the opening (111) The planar inner side (121) of the edge segment (12) is cut into a shape; the outer side of the obstacle removal structure (1) is streamlined. 3. The obstacle-removing diffuser for trains according to claim 1, characterized in that: the obstacle-removing diffuser further includes a gas diffuser protruding outward from the diffusion structure (2) for guiding and rectifying the gas flow. External diffusion structure (3); the width of the external diffusion structure (3) is smaller than the width of the opening (111). 4. The obstacle-clearing diffuser for trains according to claim 3, characterized in that: the outer diffusion structure (3) includes a deflector (31) and a plurality of outer fins (32); The inner side of the plate (31) is connected to the lower end of the fin (21), and the outer side is cantilevered upward; the outer fin (32) is symmetrically formed on the lower side of the deflector (31) and is parallel to the fin (21); The angle β formed by the side edge of the outer fin (32) and the bottom surface of the outer fin (32) ranges from 60° to 120°. 5. The obstacle-clearing diffuser for trains according to claim 4, characterized in that: the deflector (31) is arranged at an angle, and its lower surface is composed of a flat section (311) and a curved section (312). ) are spliced together; the second flat section (311) is located on the outside, the second curved section (312) is located on the inside, and the second curved section (312) and the second flat section (311), the second curved section (312) ) and the bottom surface of the fin (21) have a smooth transition; the inclination angle of the second plane section (311) is less than or equal to the inclination angle of the diffusion surface (22). 6. The obstacle-clearing diffuser for trains according to claim 1 or 2, characterized in that: the obstacle-clearing structure (1) further includes a grating plate (111) installed on the opening (111) for clearing obstacles. 13), the grid plate (13) is formed with a number of grid holes, and the gas passes through the barrier structure (1) through the grid holes. 7. The obstacle removal diffuser for trains according to claim 6, characterized in that the grid mesh holes are evenly distributed.